UPSC Static Quiz – Geography : 2 January 2025
Kartavya Desk Staff
UPSC Static Quiz – Geography : 2 January 2025 We will post 5 questions daily on static topics mentioned in the UPSC civil services preliminary examination syllabus. Each week will focus on a specific topic from the syllabus, such as History of India and Indian National Movement, Indian and World Geography, and more.We are excited to bring you our daily UPSC Static Quiz, designed to help you prepare for the UPSC Civil Services Preliminary Examination. Each day, we will post 5 questions on static topics mentioned in the UPSC syllabus. This week, we are focusing on Indian and World Geography.
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• Question 1 of 5 1. Question Consider the following statements about the distribution and causes of earthquakes: The Circum-Pacific Belt, also known as the “Pacific Ring of Fire,” accounts for more than 50% of all earthquakes. Earthquakes are common along mid-oceanic ridges due to the presence of divergent plate boundaries. The Alpine-Himalayan Belt is associated with earthquakes caused by the collision of the African and Eurasian plates. Human activities like mining and reservoir-induced seismicity are the primary causes of most earthquakes. How many of the above statements is/are correct? a) Only one b) Only two c) Only three d) All four Correct Solution: c) The Circum-Pacific Belt is the most active seismic belt and accounts for about 68% of all earthquakes. Earthquakes commonly occur along mid-oceanic ridges due to divergent plate boundaries where tectonic plates move apart, causing seismic activity. The Alpine-Himalayan Belt experiences earthquakes due to the collision and convergence of the African, Indian, and Eurasian plates. Statement 4 is incorrect because human activities, while they can induce earthquakes, are not the primary cause of most earthquakes; tectonic movements are the primary cause. Incorrect Solution: c) The Circum-Pacific Belt is the most active seismic belt and accounts for about 68% of all earthquakes. Earthquakes commonly occur along mid-oceanic ridges due to divergent plate boundaries where tectonic plates move apart, causing seismic activity. The Alpine-Himalayan Belt experiences earthquakes due to the collision and convergence of the African, Indian, and Eurasian plates. Statement 4 is incorrect because human activities, while they can induce earthquakes, are not the primary cause of most earthquakes; tectonic movements are the primary cause.
#### 1. Question
Consider the following statements about the distribution and causes of earthquakes:
• The Circum-Pacific Belt, also known as the “Pacific Ring of Fire,” accounts for more than 50% of all earthquakes.
• Earthquakes are common along mid-oceanic ridges due to the presence of divergent plate boundaries.
• The Alpine-Himalayan Belt is associated with earthquakes caused by the collision of the African and Eurasian plates.
• Human activities like mining and reservoir-induced seismicity are the primary causes of most earthquakes.
How many of the above statements is/are correct?
• a) Only one
• b) Only two
• c) Only three
• d) All four
Solution: c)
• The Circum-Pacific Belt is the most active seismic belt and accounts for about 68% of all earthquakes. Earthquakes commonly occur along mid-oceanic ridges due to divergent plate boundaries where tectonic plates move apart, causing seismic activity.
• The Alpine-Himalayan Belt experiences earthquakes due to the collision and convergence of the African, Indian, and Eurasian plates.
Statement 4 is incorrect because human activities, while they can induce earthquakes, are not the primary cause of most earthquakes; tectonic movements are the primary cause.
Solution: c)
• The Circum-Pacific Belt is the most active seismic belt and accounts for about 68% of all earthquakes. Earthquakes commonly occur along mid-oceanic ridges due to divergent plate boundaries where tectonic plates move apart, causing seismic activity.
• The Alpine-Himalayan Belt experiences earthquakes due to the collision and convergence of the African, Indian, and Eurasian plates.
Statement 4 is incorrect because human activities, while they can induce earthquakes, are not the primary cause of most earthquakes; tectonic movements are the primary cause.
• Question 2 of 5 2. Question With reference to earthquake waves, consider the following statements: P-waves travel faster than S-waves and arrive first at seismic stations. S-waves cannot travel through the Earth’s outer core because it is liquid. Surface waves have the highest velocity among all seismic waves. Love waves and Rayleigh waves are types of surface waves. Which of the above statements are correct? a) 1, 2, and 4 only b) 1 and 3 only c) 2 and 3 only d) All of the above Correct Solution: a) P-waves are primary waves that travel fastest and arrive first at seismic stations. S-waves are slower and cannot travel through liquids, so they cannot pass through the Earth’s outer core, which is liquid. Surface waves, including Love waves and Rayleigh waves, travel along the Earth’s surface and are slower than P-waves and S-waves, but they often cause the most damage due to their large amplitudes. Statement 3 is incorrect because surface waves have lower velocities compared to P-waves and S-waves. Incorrect Solution: a) P-waves are primary waves that travel fastest and arrive first at seismic stations. S-waves are slower and cannot travel through liquids, so they cannot pass through the Earth’s outer core, which is liquid. Surface waves, including Love waves and Rayleigh waves, travel along the Earth’s surface and are slower than P-waves and S-waves, but they often cause the most damage due to their large amplitudes. Statement 3 is incorrect because surface waves have lower velocities compared to P-waves and S-waves.
#### 2. Question
With reference to earthquake waves, consider the following statements:
• P-waves travel faster than S-waves and arrive first at seismic stations.
• S-waves cannot travel through the Earth’s outer core because it is liquid.
• Surface waves have the highest velocity among all seismic waves.
• Love waves and Rayleigh waves are types of surface waves.
Which of the above statements are correct?
• a) 1, 2, and 4 only
• b) 1 and 3 only
• c) 2 and 3 only
• d) All of the above
Solution: a)
• P-waves are primary waves that travel fastest and arrive first at seismic stations.
• S-waves are slower and cannot travel through liquids, so they cannot pass through the Earth’s outer core, which is liquid.
• Surface waves, including Love waves and Rayleigh waves, travel along the Earth’s surface and are slower than P-waves and S-waves, but they often cause the most damage due to their large amplitudes.
• Statement 3 is incorrect because surface waves have lower velocities compared to P-waves and S-waves.
Solution: a)
• P-waves are primary waves that travel fastest and arrive first at seismic stations.
• S-waves are slower and cannot travel through liquids, so they cannot pass through the Earth’s outer core, which is liquid.
• Surface waves, including Love waves and Rayleigh waves, travel along the Earth’s surface and are slower than P-waves and S-waves, but they often cause the most damage due to their large amplitudes.
• Statement 3 is incorrect because surface waves have lower velocities compared to P-waves and S-waves.
• Question 3 of 5 3. Question Regarding the soil-forming factors, consider the following statements: Parent material is considered an active control factor in soil formation. Climate influences soil formation through temperature and precipitation patterns. Topography affects soil formation by influencing drainage and erosion processes. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: b) Parent material is a passive control factor; it provides the initial material but does not actively drive soil formation. Climate is an active control factor, affecting soil formation through its impact on weathering processes and biological activity. Topography influences soil formation by affecting erosion rates, drainage patterns, and microclimates. So, here only statement 2 and 3 are correct. Incorrect Solution: b) Parent material is a passive control factor; it provides the initial material but does not actively drive soil formation. Climate is an active control factor, affecting soil formation through its impact on weathering processes and biological activity. Topography influences soil formation by affecting erosion rates, drainage patterns, and microclimates. So, here only statement 2 and 3 are correct.
#### 3. Question
Regarding the soil-forming factors, consider the following statements:
• Parent material is considered an active control factor in soil formation.
• Climate influences soil formation through temperature and precipitation patterns.
• Topography affects soil formation by influencing drainage and erosion processes.
How many of the above statements is/are correct?
• a) Only one
• b) Only two
• c) All three
Solution: b)
• Parent material is a passive control factor; it provides the initial material but does not actively drive soil formation.
• Climate is an active control factor, affecting soil formation through its impact on weathering processes and biological activity.
• Topography influences soil formation by affecting erosion rates, drainage patterns, and microclimates.
• So, here only statement 2 and 3 are correct.
Solution: b)
• Parent material is a passive control factor; it provides the initial material but does not actively drive soil formation.
• Climate is an active control factor, affecting soil formation through its impact on weathering processes and biological activity.
• Topography influences soil formation by affecting erosion rates, drainage patterns, and microclimates.
• So, here only statement 2 and 3 are correct.
• Question 4 of 5 4. Question Consider the following statements regarding depositional features formed by wind action in desert regions: Barchan dunes are crescent-shaped sand dunes with the horns pointing downwind. Parabolic dunes are crescent-shaped dunes with the horns pointing upwind. Longitudinal dunes are formed perpendicular to the prevailing wind direction. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: a) Barchan dunes are crescent-shaped sand dunes formed by wind action in desert areas. The horns of the dune point downwind, indicating the direction the wind is moving. They form in areas with a limited supply of sand and a unidirectional wind. Parabolic dunes are also crescent-shaped but have their horns pointing upwind. They often form in areas where vegetation anchors the sand, causing the center of the dune to move forward while the edges are held back. Longitudinal dunes (also known as seif dunes) are elongated ridges of sand that form parallel to the prevailing wind direction, not perpendicular. They develop in areas with a moderate supply of sand and bidirectional winds. So, statement 1 and 2 is correct here while statement 3 is incorrect. Incorrect Solution: a) Barchan dunes are crescent-shaped sand dunes formed by wind action in desert areas. The horns of the dune point downwind, indicating the direction the wind is moving. They form in areas with a limited supply of sand and a unidirectional wind. Parabolic dunes are also crescent-shaped but have their horns pointing upwind. They often form in areas where vegetation anchors the sand, causing the center of the dune to move forward while the edges are held back. Longitudinal dunes (also known as seif dunes) are elongated ridges of sand that form parallel to the prevailing wind direction, not perpendicular. They develop in areas with a moderate supply of sand and bidirectional winds. So, statement 1 and 2 is correct here while statement 3 is incorrect.
#### 4. Question
Consider the following statements regarding depositional features formed by wind action in desert regions:
• Barchan dunes are crescent-shaped sand dunes with the horns pointing downwind.
• Parabolic dunes are crescent-shaped dunes with the horns pointing upwind.
• Longitudinal dunes are formed perpendicular to the prevailing wind direction.
How many of the above statements is/are correct?
• a) Only one
• b) Only two
• c) All three
Solution: a)
Barchan dunes are crescent-shaped sand dunes formed by wind action in desert areas. The horns of the dune point downwind, indicating the direction the wind is moving. They form in areas with a limited supply of sand and a unidirectional wind.
Parabolic dunes are also crescent-shaped but have their horns pointing upwind. They often form in areas where vegetation anchors the sand, causing the center of the dune to move forward while the edges are held back.
Longitudinal dunes (also known as seif dunes) are elongated ridges of sand that form parallel to the prevailing wind direction, not perpendicular. They develop in areas with a moderate supply of sand and bidirectional winds.
So, statement 1 and 2 is correct here while statement 3 is incorrect.
Solution: a)
Barchan dunes are crescent-shaped sand dunes formed by wind action in desert areas. The horns of the dune point downwind, indicating the direction the wind is moving. They form in areas with a limited supply of sand and a unidirectional wind.
Parabolic dunes are also crescent-shaped but have their horns pointing upwind. They often form in areas where vegetation anchors the sand, causing the center of the dune to move forward while the edges are held back.
Longitudinal dunes (also known as seif dunes) are elongated ridges of sand that form parallel to the prevailing wind direction, not perpendicular. They develop in areas with a moderate supply of sand and bidirectional winds.
So, statement 1 and 2 is correct here while statement 3 is incorrect.
• Question 5 of 5 5. Question Consider the following statements about bioerosion: Bioerosion is a type of physical erosion primarily caused by living organisms. The growth of plant roots can cause bioerosion by creating cracks in rocks. Bioerosion solely depends on plant life and does not involve other organisms. Which of the above statements is/are correct? a) 1 only b) 1 and 3 only c) 2 and 3 only d) 1 and 2 only Correct Solution: d) Bioerosion is a form of physical erosion caused by the activities of living organisms, making statement 1 correct. Plants contribute significantly to this process by sending roots into rock crevices, expanding these openings, and eventually breaking down the rock, as described in statement 2. However, bioerosion is not limited to plants alone; animals such as burrowing creatures or marine organisms like mollusks also contribute to bioerosion, Hence statement 3 is incorrect. Bioerosion demonstrates how living organisms play a role in the gradual disintegration of geological formations, affecting both terrestrial and aquatic environments. Incorrect Solution: d) Bioerosion is a form of physical erosion caused by the activities of living organisms, making statement 1 correct. Plants contribute significantly to this process by sending roots into rock crevices, expanding these openings, and eventually breaking down the rock, as described in statement 2. However, bioerosion is not limited to plants alone; animals such as burrowing creatures or marine organisms like mollusks also contribute to bioerosion, Hence statement 3 is incorrect. Bioerosion demonstrates how living organisms play a role in the gradual disintegration of geological formations, affecting both terrestrial and aquatic environments.
#### 5. Question
Consider the following statements about bioerosion:
• Bioerosion is a type of physical erosion primarily caused by living organisms.
• The growth of plant roots can cause bioerosion by creating cracks in rocks.
• Bioerosion solely depends on plant life and does not involve other organisms.
Which of the above statements is/are correct?
• b) 1 and 3 only
• c) 2 and 3 only
• d) 1 and 2 only
Solution: d)
• Bioerosion is a form of physical erosion caused by the activities of living organisms, making statement 1 correct.
• Plants contribute significantly to this process by sending roots into rock crevices, expanding these openings, and eventually breaking down the rock, as described in statement 2.
• However, bioerosion is not limited to plants alone; animals such as burrowing creatures or marine organisms like mollusks also contribute to bioerosion, Hence statement 3 is incorrect.
• Bioerosion demonstrates how living organisms play a role in the gradual disintegration of geological formations, affecting both terrestrial and aquatic environments.
Solution: d)
• Bioerosion is a form of physical erosion caused by the activities of living organisms, making statement 1 correct.
• Plants contribute significantly to this process by sending roots into rock crevices, expanding these openings, and eventually breaking down the rock, as described in statement 2.
• However, bioerosion is not limited to plants alone; animals such as burrowing creatures or marine organisms like mollusks also contribute to bioerosion, Hence statement 3 is incorrect.
• Bioerosion demonstrates how living organisms play a role in the gradual disintegration of geological formations, affecting both terrestrial and aquatic environments.
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